Fixed Ladder Rung Width

1917 118 e 2 when a well or cage is used ladders with length of climb exceeding 30 feet 9 14 m shall comply with the following provisions.

Fixed ladder rung width.

As seen in the picture below featuring new ladder system we recommend a wider climbing surface to accommodate a ladder lifeline system and to make the ladder easier to climb. There are exceptions for ladders in elevator shafts or on telecommunications towers. Fixed ladders more than 20 feet 6 1 m in height shall be provided with a cage well or ladder safety device. All fixed ladders have rungs dictated by osha standard 1910 27 b 1 of no more than 12 300 mm on center measured as the distance from the centerline of a rung to the center line of the next rung and at 16 410 mm clear width.

First rung from the bottom can be up to 14 inches minimum clear width of rungs or cleats is 16 inches. Rungs and cleats ladder minimum diameter 3 4 inch metal rungs. Per osha 1910 23 b 4 ladder rungs steps and cleats have a minimum clear width of 16 inches measured before installation of ladder safety systems for fixed ladders. All wood parts of fixed ladders shall meet the requirements of 1910 25 b.

For fixed ladders consisting of wood side rails and wood rungs or cleats used at a pitch in the range 75 degrees to 90 degrees and intended for use by no more than one person per section single ladders as described in 1910 25 c 3 ii are acceptable. The minimum clear width of rungs on fixed ladders shall be 16. The international mechanical code 2018 306 5 4 calls for a minimum of 18 between rails.